Bass trombone identify

[Showlo64]

What's this model?
It's independent and with unconventional second valve wrap.
Looks like vintage model

[hyperbolica]

The short top cork barrel says Conn. The F wrap could be from an 90s era 62h. I'd guess that the 2nd valve wrap is a custom G wrap set up to pull to Gb or bG in any case.

[Burgerbob]

I'd guess an 83H with aftermarket open wraps.

[Kevbach33]

Besson Sovereign 943GS, probably early 90s or late 80s. I owned one before getting my Getzen.

.563"/14.3 mm straight bore, lightweight nickel silver slide; 10" gold/rose brass bell with soldered bead; convertible to F/G/Eb from F/Gb/D as stock. Top cork barrel completely unscrews to access bumper. Has a sound that favors wind band and orchestral textures, which was partly why I moved on from mine. Not ergonomically friendly either. Weirdly long F trigger throw.

Here's a better picture of my own...

20140329_215600.jpg

...and a pic of the linkage side. The 2nd valve linkage is aesthetically pleasing to look at, to me; I'd call the throw average for 2nd valve rotors and definitely shorter than the F valve.

20140329_220258.jpg

[Showlo64]

Thank you so much
I couldn't sleep for this
Totally forgot the bessons